package com.wanfu.util.system;


import com.wanfu.util.consts.MyCharset;

import java.io.UnsupportedEncodingException;

public class MyMD5Encoder {
    private static final char[] hexadecimal = new char[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};


    private MyMD5Encoder() {
    }

    public static String encode(byte[] binaryData) {
        if (binaryData.length != 16) {
            return null;
        } else {
            char[] buffer = new char[32];

            for(int i = 0; i < 16; ++i) {
                int low = binaryData[i] & 15;
                int high = (binaryData[i] & 240) >> 4;
                buffer[i * 2] = hexadecimal[high];
                buffer[i * 2 + 1] = hexadecimal[low];
            }

            return new String(buffer);
        }
    }
    public static String encode(String text) throws UnsupportedEncodingException {
        return encode(text.getBytes(MyCharset.UTF_8));
    }
}
